giraffagotchi

If you have a number password, then go to the menu where it says GAME, ITEM, SHOP, PASSWORD and SOUVENIR. You want PASSWORD. Type the code in using the A Button to scroll through the numbers, the B Button to select one, and then the C Button to go back to the previous number if you typed it wrong.

If you have a letter code, go to SHOP, and then when you get the stall holder up, press the A Button three times, and he will put his arms up and look frightened. Then, using the method in the above paragraph, type in the code.